1. The stability of tips and spoil heaps;Bishop;Q.J. Eng. Geol.,1973
2. On liquefaction phenomena;Casagrande;Ge´otechnique,1971
3. Liquefaction of sands;Castro,1969
4. Factors affecting liquefaction and cyclic mobility;Castro,1977
5. Transient Moisture Movements in Stockpiled Granular Materials;Eckersley,1977